@article{VMUMM_1995_5_a19,
     author = {A. A. Afonin},
     title = {On the rolling of a heavy ball on a ring},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {105--108},
     publisher = {mathdoc},
     number = {5},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1995_5_a19/}
}